Intake manifold



EASBSS A. c. ENNETT INTAKE MANIFOLD Filed March l, 1917 July 24, 31923.

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Agway @en/few /s i Patented July 24, 1923..

UFMTFD TATS Parr ortie.

ASHLEY C. BENNETT, OF MINNEAPOLIS, MINNESOTA, ASSIGNOJR TO E. BENNETT,

0F MINNEAPOLIS, MINNESOTA. l V

INTAKE MANIFOLD.

.application mea maren fi, `i917. serial no. 151,697.

T oall whom it 'may cm'em:

Be it known that l, ASHLEY C. BENNETT, a citizen of the lUnited States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful improvements in `Intake Manifolds, of which the following is a speciiication exhaust manifold through one of whichl branches extends a portion of the passageway leading from the carbureter to the intake manifold, and l control said passageways by valve mechanism so that the exhaust gases may be compelled either to flow directly to atmosphere in the usual lway or through the passageway containing the member extending from the carburetor, although my invention is` capable -of application in various forms, and includes broadly means for heatin or not, at will, gas after it has left the car 'ureter and before it enters the cylinders. A preferred form of heating mechanism is shown here which involves a feature of my, invention'. This is an expanded chamber between the outlet from the' carbureter and the inlet into the intake manifold, said' expanded chamber-being in thesecondary exhaust passageway where its walls may be heated or not, in accordance with the practice of my invention.

The full objects and advantages of my invention will appear in connection with the detailed ldescription thereof, andare par.- ticularly pointed out in the claims.

In the drawings illustrating the application of my invention in one form,..-

Fig. 1 1s an enlarged, part sectional, side elevation view of my improved device. Fig.V

2 shows how the same may appear in connection with a gas engine. Fig. 3 is a side a leg 10 connected by branch pipes l11 with the cylinders of the engine, said branch pipesl being extended in bell-fashion, as indicated at` 12, at their junction with the pipe 10, sothat gas will flow with equal facility from said branches in either direction. The pipe 10 is connected by a bend 13, with a second leg 14, the leg 14 uniting 1n a valve chamber 15 with a second bend 16 from pi e 10. From the valve casing 15 extends ex aust ipe 17 which passes in the usual way to mu er and exhaust discharge.

'The chamber 151 is formed with a circular sealing surface which may be somewhat conical, as indicated in Fig. 7, for the .purpose of taking up wear. 'lihe three members 14, 16 and 17 open respectively into this chamber,.members 14 and 16 extending at rightangles to one another, and member 17 on substantially thev median line outwardly with respect to members 14 and 15. Within thischamber is positioned a threeway cock 18 having a portion 19 which in one position of the cock blocks passageway 1() and in another .position blocks passageway 14. In the first of these positions, the passageway 14 is left entirely open to exhaust pipe 17, so that the exhaust gases are free to travel through pipe 10, bend 13, and passageways 14 and 17.

When the cock 18 is turned into the positionv indicated in dotted lines in Fig. 1, blocking passageway 14, the passageway 10 is opened through bend 16 'directly to exhaust pipe 17.

Preferably, the pipes 10 and 14,in order to provide a more compact construction will be disposed in an oblique plane, as indicated in Figs. 5 and 6 and between these pipes and, if desired integral with pipe 14, will be a first member 20 of thev intake manifold having opening therefrom passages 21 and 22 toward the engine and a single passageway elo 23, which ultimately' reaches an inlet plpe 24 connected through a pipe 25 with the carbureter 26, as best shown in Fig. 2. Connecting passageways 23 and 24, is a member 36 which is included within an expanded portion 35 of'the pipe 14. This member 36 may be of any desired form, shape, or size and, obviously, the walls thereof will be exposed to the hot exhaust gases whenever the cock 18' is turned into the position shown in Fig. 1, so that exhaust must take place through pipe 14.

l have found that most highly efficient results are obtained by making the heating member 36, as shown herein, globular in form comprising an enlarged chamber 27. This has the e'ect of slowing the velocity of the stream of incoming gas as it passes through the chamber, with the result that the larger particles of unevaporated liquid will, under the inuence of gravity, tend to fall back, resulting in their being thrown to the side and against the walls of heated member 36.

Theadvantages of my invention will be obvious. lits reatest use is in connection with the burning of liquid fuels of a relatively heavy character, such as kerosene, crude oil, and various forms of distillate. Such fuels are hard to break up into gaseous form, and tend to pass from the carbureter in small particles or drops. lf these unevapvorated particles reach the manifold and the engine cylinders, ooding and serious engine trouble may result. It is obvious that the heating member 36, being in the main stream of the entire exhaust, will be heated very hot so that any particles of liquid striking the same, will beY instantly vaporized, such evaporation resulting in keeping the temperature of the heating member down suicie'ntly to prevent preignition. llt is not, however, desirable at all times or speeds with any given-fuel, or at all with some lfuels, to employ the heating member 36. Under such circumstances with the double exhaust device andthe cock18, hand controlled through arm and con- :recense necting member 31, it is always possible to cut out the heating of member 36 whenever desired, and also to any degree desired, for it is clear that the portion 19 of cock 18 may be made to cover completely the opening either from pipe la or bend 16, or may be made to cover `more or less each of said openings, yresulting in a greater or less flow of hot gases through pipe llt and heating member 36. At high speeds when the weight of the mixture going to the cylinders in proportion to its volume should` be as great as possible, Vit is usually desirable to cut out the heater entirely, unless the fuel used is so heavy that the heater can be advantageously used in breaking up the heavy particles passing through pipe 24: and precipitated against the interior walls of chamber 27.

wl claim: 4

An intake device for gas engines comprising an exhaust pipe formed in two interconnected sections, one of said sections being connected with the cylinders of the engine, an intake manifold secured upon the other section and having a 'connection with the carbureter extending through and surrounded by said other section, and controllable means for causing varyingquantities of the exhaust gases to'pass through said last mentioned pipe section.

ln testimony whereof ll afx my signature.

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